SMT-W5100 User Guide _93SystemPress the [Menu] button in idle mode, and then select the [8. System] icon.RegistrationThis function enables to register a phone to the wireless LAN system (main system).The phone is available only after registered to the system.[MENU] X 8. System X [OK] X 1. Registration X(Select the system) X [OK]To set the phone’s operation mode, select from SIP mode andNon SIP mode.Contact the system administrator to check which mode the systemsupports, and then select either SIP mode or Non SIP mode.If you want to access FON AP, select Non SIP Mode.(Non SIP mode should be selected for system operation mode.)